(n) master clock
atomic clock
(n) (comp) information block
(n) (comp) control block
(n) bumpy tiles set in public areas to mark the path for the blind
(n) (comp) internal clock
(n) (comp) logical block
(n,pref) interlock
(n) woodblock (musical instrument)
(n) glass block
(n) cap rock
(n) (comp) Caps Lock
(n) (comp) clock up
(n) (comp) clock signal
clock pulse
(n) (comp) clock rate
(n) (comp) clock source
(n) (comp) clock frequency
(n) gauge block
(n) Gothic rock
(n) (comp) spamblock
(n) numeric keypad lock (wasei: ten key lock)
(n) (comp) drag lock
(n) nitrox
any nitrogen-oxygen gas mix
(n) hammerlock
(n) folk rock
(n,vs) (comp) framelock
(n) frock coat
(n) block gauge
(n) (comp) block size
(n) blocking signal
(n) (comp) blocking software